Figure 3From: Addition of histamine to subcutaneously injected Plasmodium berghei sporozoites increases the parasite liver load and could facilitate whole-parasite vaccination Relative 18S rRNA liver load following a single injection of 10 4 sporozoites. Animals were infected with SPZ sc in PBS plus 3 μg histamine and 5 IU heparin (3 μg his; n = 10) or in PBS only (sc; n = 9). Liver load was obtained at 42 hrs after infection.Back to article page